Rib warp frame



A ril 5, 1938. v H mm. 2,113,525

RIB WARP FRAME Original Filed Oct. 20, 1936 v2 Sheets-Sheet 1 [/We/r/or:HERBERT WIRTH ATTORNEY April 5, 193s. HMRTH 2,113,525

RIB WARP FRAME Original Filed Oct. 20, 1936 2Sheets-Sheet 2 ATTORNEYPatented Apr. 5, 1938 I UNITED STATES PATENT m:

RIB WAR-P FRADIE 'Herbert Wirth, Hartmannsdorf, near Chemnitz, Germany,assignor to the firm Emil Wirth Wirkmaschinenfabrik, Chemnitz, GermanyHartmannsdorf, near Application October 20, 1936, Serial No. 106,621.

Renewed January 13, 1938. In Germany October 29, 1935 7 Claims. (0!.66-87) I This would require an exchange of the cam mechanism. The twolap movements must be performed in the period of time which in theoperation of the machine is provided for performing the path necessaryfor producing fabrics in atlas lap. fie device according to theinvention allows the production of fabrics in simple atlas lap as wellas in plating and similar laps 0 on double rib warp frames or the like.

According to the invention the production of fabrics in the differentkinds of lap is possible by the fact, that the cams required for thefabric production in atlas lap as well as in plating laps are providedin the machine.

A clutch or the like arranged upon the shaft carrying the guide needlemachines allows the transfer of the eifect of the one or the other cammechanism upon the guide needle machines. By means of the clutch or thelike, the device for producing fabrics in atlas lap is manually orautomatically rendered inoperative and simul taneously the platingtackle is positively rendered operative and vice versa.

In the same period of time in which, when producing fabrics in atlaslap, the guide needle machines once swing between the spring beardneedles' in each row, the guide needle machine or both guide needlemachines twice swing between the spring beard needles on producingfabrics in plating laps.

The double lap for producing fabrics in platlng or the like laps must beefiected in the period of the time provided in the operation of themachine for performing the path necessary for the production of fabricsin atlas lap. To gain thcr time for carrying out the double lap, the ribwarp frame may also beso constructed, that during this period of timethe operation of the. machine is retarded. v

In the accompanying .drawings a construction according to the inventionis diagrammatically shown by way of example. v

In these drawings: v

Fig. 1 is a view of the parts of a rib warp frame ,23 mounted upon apivot or shaft 22.

which come into consideration for the purposes of the invention,

Fig. 2 shows a section through the clutch device,

Fig. 3 is a side view of the clutch device shown in the direction of thearrow :1: in Fig. 2,

Fig. 4 illustratesa'view of an additional mech anism for changing theoperating speed during the time provided for performing the lap path,

Fig. 5 is a section on the line V-V of Fig. 4, and

device illustrated in Fig. 4. g

In the frame of the machine, not shown on the drawings, the cam shafts land 2 are journalled in a well known manner. Upona shaft 3 guide needle.machines I, carryingguide needles 5, are pivotally mounted. Rib. warp'frameshitherto Fig. G'shows another operative position of the wereprovided with a cam fixed upon a cam shaft by means of which the guideneedle machines were actuated. This cam was of such construction as toallow the required lap movements to be carried out. The useof this lapdevice, however, allowed carrying only, i. e., atlas lap.

Pivotally mounted upon a bolt or pivot 6 is a lever 1 adapted to bemoved by a lap cam, not shown in the drawings. Pivoted upon the shaft 2,carrying theguide needle machines 4, is a lever 8 movements of which inthe longitudinal direcbut of one kind of lap tion of the shaft 3 areprevented by means of set collars 9 and it. At one side the hub llof-the lever 8 'is provided with clutch teeth 12. By means of a pivot orbolt l3 one end of a link it is pivotally connected to the lever I,while the other end of this link carries a pivotor bolt I! engaging alongitudinal slot It provided in an arm l'l forming part of the lever lactuated by the lap cam mechanism.

Fixed upon the cam shaft 2 is an eccentric gear wheel or an elliptictoothed wheel I8 which engages an eccentricgear wheel'20 mounted uponapivot or a rotatable shaft V IS. The latter also carriesja gear wheel 2|engaging a gear wheel f Fixed upon the shaft 22 is a cam, not shown inthe drawings, which actuates a cam lever 24 mounted upon a pivot 25. Thecam lever 24 is provided I with a projection 26 which carries a bolt ofpivot 21. One end on link 28 is attached to this pivot v 21, while theother end of the link is, by means of a pivot .0; bolt 29, pivotallyconnected to a lever 30. The latter is, in a manner similar to the lever8, loosely mountedupon the shaft 3.

Setcollars 3| and 32 prevent movements of the lever 38 in thelongitudinal direction of the shaft 3. At one side the hub 33 of thelever 38 carries clutch teeth 34.

Between the two levers 8 and 38 carried by the shaft 3 a clutch element35, provided with clutch teeth 36 and 31, is mounted upon this shaft 3.The clutch teeth l2 carried by the hub ll of the lever 8 as well as theclutch teeth 34 on the hub 33 of the lever 38 are provided at the sidesof the hubs II and 33 facing the clutch element 35.

The latter is connected to the shaft 3 by means of a wedge 38. Theclutch-element 35 may, however, be shifted in the longitudinal directionof the shaft 3 for which purpose a rod 38 is provided. By shifting theclutch element-35 either its teeth 36 may be brought into engagementwith the teeth l2 on the hub ll of the lever 8, or its teeth 31 may bebrought into engagement with the teeth 34 on the hub 33 of the lever 30.

The spring beard needles are designated with 48 and the sinkers areshown at 4|.

If the teeth l2 are coupled to the teeth 35, the cam movements aretransferred to the shaft 3 by means of the cam lever 1 and the lever andlink system l1, l4, 8. The guide needle machine or the guide needlemachines 4 then perform the movement required for the production offabrics in atlas lap. For the production of such fabrics the guideneedles 5 in each row swing once only between the spring beard needles40.

If the clutch element 35 is shifted by means of the rod 38, the clutchteeth l2 and 36 are disengaged and the clutch teeth 31 and 34 are thecam lever 24 and the link 28in such a. manner, that the guide needles 5,carried by the guide needle machines 4, may, as required for theproduction of fabrics in plating laps, twice swing between the springbeard needles 4!! in the period of time available for performing thepath of the atlas lap.

By means of the elliptic gear wheel l8 and th eccentric wheel 28, thecam shaft 22 is correspondingly faster rotated, so that the double lapmay be effected in the period of time provided in the operation of themachine for performing the lap path.

To aid this mode of operation a drive may be provided for the two camshafts-by means of which the speed of rotation of the shafts may beretarded during the period of time available for carrying out the lapmovements. Hereby time is gained for the accelerations of the platingcamrequired for carrying out platings without altering the time for theother movements. Fixed upon the well known drive shafts 42, connectedwith each other, are gear wheels 43 v and oval-shaped gear wheels havingchange over gearings 45 and 46 the dimensions of the pitch curves ofwhich change from that of the gear .wheels 43 to that of a smallerportion 44 of the spectively are arranged upon a rim which is greaterthan that of the main gear wheels 41, the

arrangement being such that the teeth 53, 5|

may engage the smallest portions 44 of the ovalshaped gear wheels. Inthe direction of rotation, the front and rear portions of the segment 48are provided with change over teeth 52 and 54 respectively, the pitchcircle of'which progressively decreases from that of the teeth 58 tothat of the gear wheel 41. In a similar manner, the front and rearportions of the segment 48 are provided with change over teeth 53 and 55respectively. The portions 56 and 51 of the main gear wheels 41.corresponding to the length of'the segments 48 and 48 respectively are,as shown in Fig. 4, not provided with teeth.

The operation of the frame according to the invention is as foilows:-

In a well known mannerthe rib warp frame isdriven by the gear wheels 43,41.

The segments 48 and 49 are arranged upon the main gear wheels 41 at theportions corresponding to the lap path and their length corresponds tothe length of said path.

If the front end of the segment 48 or 48 i. e., the portion carrying theteeth 52 and 53 respectively comes into contact with the ascending portion 45 of the oval-shaped gear wheel, as shown in Fig. 6, theengagement of the teeth of the main gear wheel 41 with the teeth of thegear wheel 43 is interrupted, becausethe portions ofthe wheel 41corresponding to the length of the segments are, as indicated at 56 and51 (Fig. 4) not provided with teeth. On further rotation the smallestportion 44 of the oval-shaped gear wheel comes into engagement with theteeth or 5| the pitch circle of which is greater than that of the main.gear wheel 41.

Due to the changed ratio of gearing, the rotation of the cam shafts isretarded for the period .of time during which the segments 48 and 48respectively are operative, so that time for twice swinging the guideneedles between the spring beard needles, required for the production offabrics in plating or similar laps, is gained. The cams may, .due tothis arrangement, be constructed in a more advantageous manner.

At the end of the period of the lap path, the gear wheel 43 is, by theengagement of the teeth 54 or 55 with the descending change over portion46 of the oval-shaped gear wheel, again brought into engagement with theteeth of the main gear wheel 41, so that the rib warp frame operatesagain with the normal speed of rotation.

What I claim is: I

1. In a rib warp frame, double rib warp frame or the like as set forth,guide needle machines, a first cam controlling the production of fabricsin atlas lap, a second cam controlling the production of fabrics'inplating lap, and means for alternately effecting the lap movements ofsaid guide needle machines by said first cam and said second cam for theproduction of fabrics in atlas lap or in plating or similar laps.

2. In a rib warp frame, double rib warp frame or the like as set forth,a shaft, a guide-needle machine carried by said shaft, a cam shaft, a.cam, controlling the production of fabrics 'in' atlas lap, mounted uponsaid cam shaft, a second cam shaft, a second cam, controlling theproduction of fabrics in plating lap, mounted upon .said second camshaft, levers loosely mounted upon said shaft, a cam lever actuated bysaid cam controlling the atlas lap, at second cam lever actuated by saidcam controlling the plating lap,

a link connecting said cam lever to one of said levers loosely mountedupon said shaft, a second link connecting said second cam lever to theother of said levers loosely mounted upon said shaft, and a clutchmember adapted to alternately connect said levers to said shaft.

3. A rib warp frame, double rib warp frame or the like, as set forth inclaim 2 in which said clutch member is fixed upon said shaft bya wedgeallowing movements of said clutch member in the longitudinal directionof said shaft, a

. rod fixed to said clutch member being adapted to shift said clutchmember.

4. A rib warp frame, double rip warp frame or the like, as set forth inclaim 2 in which said clutch member is fixed upon said shaft by a wedgeallowing movements of said clutch member in the longitudinaldirection'of said shaft, both ends of said clutch member carry couplingteeth adapted to cooperate'with coupling teeth carried by the hubs ofsaid levers loosely mounted upon said shaft, and a rod is fixed to saidclutch member to allow longitudinal shiftings of the latter,

5. A rib warp frame, double rib warp frame or the like as set forth inclaim 2 in which eccentric gear wheels are provided adapted toaccelerate, during the lap path, the speed of rotation of said camefi'ecting the movement of said guide needle machines when performingplating laps.

6. A rib warp frame, double rib warp frame or the like as set forth inclaim 2 in which both cam shafts are driven by main gear wheels each ofof the teeth of which is greater than that of the said main gear wheelsand decreases from the center portion towards both ends to merge intothe pitch circle of the corresponding main gear wheel, said teeth ofsaid segments cooperating with an oval-shaped gear fixed upon a driveshaft, also carrying a circular gear wheel cooperating with the saidmain gear wheel, and provided with teeth the pitch curve of whichincreases from a smallest circular portion to a greatest portion of thesame radius than that of the said circular gear wheel mounted on thesame shaft.

7; A rib warp frame, double rib warp frame or the like as set forth inclaim 2 in which both cam shafts are driven by main gear wheels each ofwhich carrying toothed segments the pitch circle of the teeth of whichisgreater than that of the said main gear wheels and decreases from thecenter portion towards both ends to merge into the pitch circle ofthecorresponding main gear wheel, said segments being fixed to portions ofsaid main gear wheel not provided with teeth HERBERT

